[Campbell Biology P.433] Based on the provided text, which of the following best describes t... | Practice Question

Based on the provided text, which of the following best describes the process of 'pattern formation'?

  • A: It is the process by which cells become irreversibly committed to a specific cell type, like myoblasts.
  • B: It involves the establishment of the major body axes and the spatial organization of tissues and organs in an embryo.
  • C: It is solely controlled by the activation of master regulatory genes like myoD in specific cells.
  • D: It refers to the fusion of nondividing cells to form multinucleate structures, such as muscle fibers.

Explanation

This question tests the definition of 'pattern formation' as provided in the text. Pattern formation is a fundamental developmental process that establishes the overall body plan and the precise spatial arrangement of an organism's tissues and organs, guided by 'positional information' through cytoplasmic determinants and inductive signals.